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Related Experiment Video

Updated: Dec 21, 2025

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System
09:48

Construction and Operation of a Light-driven Gold Nanorod Rotary Motor System

Published on: June 30, 2018

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Nanoscale rotational optical manipulation.

Masayuki Hoshina, Nobuhiko Yokoshi, Hajime Ishihara

    Optics Express
    |May 15, 2020
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces novel optical methods for rotating and switching the direction of nano-objects. These techniques leverage optical nonlinearity and plasmon resonance for precise nanoscale manipulation.

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    Area of Science:

    • Optics
    • Nanotechnology
    • Physics

    Background:

    • Optical tweezers utilize light momentum to manipulate microparticles, with applications in biosciences.
    • Current research focuses on optical manipulation of nano-objects, exploring techniques like push-pull switching and super-resolution trapping.
    • The rotational control of nano-objects using light remains an underexplored area.

    Purpose of the Study:

    • To propose and investigate mechanisms for achieving rotation and directional control of nano-objects.
    • To explore optical manipulation in both macroscopic and nanoscopic regimes.
    • To advance the fundamental understanding of nanoscale optical manipulation.

    Main Methods:

    • Controlling the balance between dissipative and gradient forces via optical nonlinearity for macroscopic rotation.
    • Utilizing light scattering through localized surface plasmon resonance in metallic nano-complexes for nanoscale rotation.
    • Converting spin angular momentum to orbital angular momentum for optical force generation.

    Main Results:

    • Demonstrated switching of macroscopic rotational motion direction in nano-objects.
    • Induced optical forces for rotational motion in the nanoscale area through plasmon resonance.
    • Established fundamental operations for nanoscale optical manipulation of nanoparticles.

    Conclusions:

    • Novel mechanisms for optical rotation and directional switching of nano-objects are presented.
    • The study highlights the potential of optical nonlinearity and plasmon resonance for advanced nanoscale manipulation.
    • This research contributes fundamental insights into controlling nano-object motion with light.